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    Author(s): Leslie M. Reid
    Date: 2012
    Source: In: Standiford, Richard B.; Weller, Theodore J.; Piirto, Douglas D.; Stuart, John D., tech. coords. Proceedings of coast redwood forests in a changing California: A symposium for scientists and managers. Gen. Tech. Rep. PSW-GTR-238. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. pp. 151-161
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (672.33 KB)

    Description

    Initial increases in dry-season flow after selective logging of second-growth coast redwoods (Sequoia sempervirens) in the 424 ha South Fork Caspar Creek watershed disappeared by 7 years after logging ended, and low flows then dropped to below expected values for the next 20 years. During the16 years after clearcut logging in the 473 ha North Fork watershed, late summer flows increased to nearly twice those expected and then declined to pre-treatment levels on a trajectory that suggests further decline is likely. This contrast in dry-season flow responses is consistent with expected differences in post-logging recovery rates for transpiration after selective and clearcut logging. The South Fork showed a delayed peakflow response relative to that in the North Fork, and a maximum 3 year increase (per unit area of clearcut equivalent) about 40 percent lower. South Fork peaks remained slightly elevated for more than 20 years after logging ended, and North Fork peaks remained elevated for at least 12 years after logging.

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    Citation

    Reid, Leslie M. 2012. Comparing hydrologic responses to tractor-yarded selection and cable-yarded clearcut logging in a coast redwood forest. In: Standiford, Richard B.; Weller, Theodore J.; Piirto, Douglas D.; Stuart, John D., tech. coords. Proceedings of coast redwood forests in a changing California: A symposium for scientists and managers. Gen. Tech. Rep. PSW-GTR-238. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. pp. 151-161.

    Keywords

    cumulative watershed effects, logging, low flow, peakflow, recovery

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